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United States Patent | 5,124,873 |
Wheeler ,   et al. | June 23, 1992 |
A surge suppression circuit for use in a high frequency communication network, having a primary line and a ground line, includes a gas tube connected between the primary line and ground line, a bi-directional avalanche diode and one or more ferrite beads connected in series between the primary line and ground line, and a metal oxide varistor connected in series in the primary line.
Inventors: | Wheeler; John M. (Salt Lake City, UT); Stringfellow; Michael F. (Salt Lake City, UT) |
Assignee: | EFI Corporation (Salt Lake City, UT) |
Appl. No.: | 428975 |
Filed: | October 30, 1989 |
Current U.S. Class: | 361/58; 361/56; 361/111; 361/113 |
Intern'l Class: | H02H 009/04 |
Field of Search: | 361/56,58,111,91,113,119,126,127 |
4389695 | Jun., 1983 | Carpenter, Jr. | 361/91. |
4586104 | Apr., 1986 | Standler | 361/56. |
4677518 | Jun., 1987 | Hershfield | 361/56. |